code: def symmetric_normalize_adjacency(graph):
      """Symmetric normalize graph adjacency matrix."""
      indices = torch.stack(graph.edges())
      n = graph.num_nodes()
      adj = dglsp.spmatrix(indices, shape=(n, n))
      deg_invsqrt = dglsp.diag(adj.sum(0)) ** -0.5
      return deg_invsqrt @ adj @ deg_invsqrt
  
file_path: dgl/examples/pytorch/ogc/utils.py
imports: import dgl.sparse
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 1 for calling a global function with example usage: symmetric_normalize_adjacency(graph) and returns: unknown